Thermally oxidized aluminum as catalyst-support layer for vertically aligned single-walled carbon nanotube growth using ethanol
Characteristics and role of Al oxide (Al-O) films used as catalyst-support layer for vertical growth of single-walled carbon nanotubes (SWCNTs) were studied. EB-deposited Al films (20 nm) were thermally-oxidized at 400 oC (10 min, static air) to produce the most appropriate surface structure of Al-O...
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| Format: | Article |
| Language: | English |
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Elsevier
2011
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| Online Access: | http://eprints.utem.edu.my/id/eprint/4620/1/ASS-_Authors_copy.pdf http://eprints.utem.edu.my/id/eprint/4620/ http://www.journals.elsevier.com/applied-surface-science/#description |
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| Summary: | Characteristics and role of Al oxide (Al-O) films used as catalyst-support layer for vertical growth of single-walled carbon nanotubes (SWCNTs) were studied. EB-deposited Al films (20 nm) were thermally-oxidized at 400 oC (10 min, static air) to produce the most appropriate surface structure of Al-O. Al-O catalyst-support layers were characterized using various analytical measurements, i.e., atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and spectroscopy ellipsometry (SE). The thermally-oxidized Al-O has a highly-roughened surface, and also has the most suitable surface chemical states compared to other type of Al-O support layers. We suggest that the surface of thermally-oxidized Al-O characterized in this work enhanced Co catalyst activity to promote the vertically-aligned SWCNT growth. |
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